components: { ElementTable, VueBpmn }, methods: { openNewDialog() { this.dialogVisible = true; }, processSave(data) { let that = this; that.post(this.Apis.processBuffer, data, res => { if (res.code == 200) { that.$refs.elementTable.reload(); } }) }, deploy() { } }

解决vue2.0 element-ui中el-upload的before-upload方法返回false时submit()不生效问题

在Vue2.0中，Element-UI库提供了一个强大的组件el-upload，用于处理文件上传功能。在本文中，我们将深入探讨如何解决在before-upload方法返回false时，submit()方法不生效的问题，以及如何在取消上传时仅...

VUE 3D轮播图封装实现方法1.zip

let _self=this; return { pageinationIndex:0, data: { "bannerList":[] }, swiperOption: { loop: true, // 循环 speed:500, //切换速度 mousewheelControl: false,// 禁止鼠标滚轮切换 lazy: { loadPrevNext: ...

<script> import Aside from "@/components/Aside"; import Header from "@/components/Header"; export default { name: 'Home', data() { return { collapseBtnClass: 'el-icon-s-fold', isCollapse: false, sideWidth: 200, logoTextShow: true, user: {} } }, components: { Aside, Header }, created() { // 从后台获取最新的User数据 this.getUser() }, methods: { collapse() { // 点击收缩按钮触发 this.isCollapse = !this.isCollapse if (this.isCollapse) { // 收缩 this.sideWidth = 64 this.collapseBtnClass = 'el-icon-s-unfold' this.logoTextShow = false } else { // 展开 this.sideWidth = 200 this.collapseBtnClass = 'el-icon-s-fold' this.logoTextShow = true } }, getUser() { let username = localStorage.getItem("user") ? JSON.parse(localStorage.getItem("user")).username : "" if (username) { // 从后台获取User数据 this.request.get("/user/username/" + username).then(res => { // 重新赋值后台的最新User数据 this.user = res.data }) } } } } </script>

该组件的 data 属性中包含了一些状态，如是否折叠侧边栏、侧边栏的宽度、是否显示 Logo 文字等。组件的 created 方法中调用了 getUser 方法，用于从后台获取最新的用户数据。组件的 methods 属性中定义了 collapse ...

解释 methods: { async fn() { let { data } = await instance.get("/index.json"); this.arr = data.cart.products; // console.log(data.cart.products); }, startLogin() { this.$router.push({path: '/login'}) }, addToCart(product) { this.isCar = false; const cartItem = this.cartItems.find(item => item.product.id === product.id); if (cartItem) { cartItem.quantity++; } else { this.cartItems.push({ product, quantity: 1 }); } }, removeFromCart(item) { this.isCar = true; const index = this.cartItems.indexOf(item); this.cartItems.splice(index, 1); } }, computed: { totalPrice() { return this.cartItems.reduce((total, item) => total + item.product.price * item.quantity, 0); } }, components: {CarItem, Tabbar}, beforeMount() { this.fn(); }, };

- fn() 是一个异步方法，使用 Axios 库发送 GET 请求，并请求获取 /index.json 的数据，将 data.cart.products 赋值给 this.arr，同时打印出 data.cart.products。 - startLogin() 是一个方法，在点击时...

解释代码：<script> import navBar from '@/components/NavBar' import swiper from '@/components/Swiper' import { getHome } from '../service/home' import { getUserInfo } from '../service/user' import { getLocal } from '@/common/js/utils' import { Toast } from 'vant' import axios from '../utils/axios' export default { name: 'home', data() { return { swiperList: [], isLogin: false, headerScroll: false, hots: [], newGoodses: [], recommends: [], categoryList: [ { name: '楼楼交友', imgUrl: '//s.yezgea02.com/1598679532890/jiaoyou.png', categoryId: 100001 }, { name: '楼楼家政', imgUrl: '//s.yezgea02.com/1598679532890/jiazheng.png', categoryId: 100003 }, { name: '楼楼水产', imgUrl: '//s.yezgea02.com/1598679734813/shuichan1.png', categoryId: 100002 }, { name: '楼楼租车', imgUrl: '//s.yezgea02.com/1598679532890/zuche.png', categoryId: 100004 }, { name: '楼楼招聘', imgUrl: '//s.yezgea02.com/1598679792590/pin.png', categoryId: 100005 }, { name: '楼楼二手', imgUrl: '//s.yezgea02.com/1598679853415/ershou.png', categoryId: 100006 }, { name: '楼楼宠物', imgUrl: '//s.yezgea02.com/1598679532890/chongwu.png', categoryId: 100007 }, { name: '楼楼外卖', imgUrl: '//s.yezgea02.com/1598679905787/wm.png', categoryId: 100008 }, { name: '楼楼电器', imgUrl: '//s.yezgea02.com/1598680199443/dianqi.png', categoryId: 100009 }, { name: '楼楼充值', imgUrl: '//s.yezgea02.com/1598680264015/czcz.png', categoryId: 1000010 } ], } }, components: { navBar, swiper }, async mounted() { const token = getLocal('token') if (token) { this.isLogin = true } window.addEventListener('scroll', this.pageScroll) Toast.loading({ message: '加载中...', forbidClick: true }); const { data } = await getHome() this.swiperList = data.carousels this.newGoodses = data.newGoodses this.hots = data.hotGoodses this.recommends = data.recommendGoodses Toast.clear() }, methods: { pageScroll() { let scrollTop = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop scrollTop > 100 ? this.headerScroll = true : this.headerScroll = false }, goToDetail(item) { this.$router.push({ path: product/${item.goodsId} }) } } } </script>

这是一个 Vue.js 组件的代码，其中包含了导入组件、导入服务、导入工具函数、导入第三方库等等。组件的名称是 home，其中包含了一些数据和...在 methods 中，还包含了一个 goToDetail() 方法，用于跳转到商品详情页。

Vue+Element-UI实现登录表单：集成随机验证码与验证功能

components: { SIdentify }, data() { return { form: { username: '', password: '', verifyCode: '' }, rules: { username: { required: true, message: '请输入用户名', trigger: 'blur' }, ...

【In-Depth Analysis of the ARIMA Model】: Mastering Classical Methods for Time Series Forecasting

# Machine Learning Methods in Time Series Forecasting Time series analysis is a crucial method in statistics used to study the patterns and characteristics of data points over time. The ARIMA model, ...

[Data Security and Backup]: Ultimate Strategies for Protecting Data with Python and MySQL

# Data Security and ...In the digital era we live in today, data security and backup have become one of the most crucial components in the field of IT security. Both enterprises and individuals store

Dealing with Imbalanced Data: 7 Strategies to Overcome the Challenge

# Dealing with Imbalanced Data: 7 Strategies to Overcome the Challenge ## 1. Overview of Imbalanced Data Processing In the practice of machine learning and data mining, imbalanced data is a common ...

<template> </template> <script> import { urlToBuffer } from "@/utils/utils"; export default { name: "", props: { imgSrc: { require: true, type: String, }, }, data() { return { observer: null, }; }, components: {}, created() { this.observer = new IntersectionObserver((entries) => { entries.forEach((entry) => { if (entry.isIntersecting) { // 如果图片进入了可视区域，下载并解密图片 this.fetchAndDecryptImage(entry.target); entry.target.src = require("@/assets/img/yes_bg.svg"); // 解密后取消观察 this.observer.unobserve(entry.target); } }); }); // this.$nextTick(() => { this.observer.observe(this.$refs.observe); }); }, updated() {}, mounted() {}, methods: { fetchAndDecryptImage(img) { // 获取图片的加密数据 urlToBuffer(img.src) .then((src) => { img.src = src; }) .catch((error) => { img.src = "@/assets/img/yes_bg.svg"; }); }, }, computed: {}, watch: {}, }; </script> <style scoped> </style>在这个代码基础上优化排队下载图片，只有上一个图片加载完再发起下一个图片请求

imgSrc: { require: true, type: String }, }, data() { return { observer: null, queue: [], // 存放需要加载的图片链接 }; }, components: {}, created() {}, updated() {}, mounted() { this.queue...

<template> </template> <script> import { urlToBuffer } from "@/utils/utils";//图片解密方法 export default { name: "", props: { imgSrc: { require: true, type: String, }, }, data() { return { observer: null, }; }, components: {}, created() { this.observer = new IntersectionObserver((entries) => { entries.forEach((entry) => { if (entry.isIntersecting) { // 如果图片进入了可视区域，下载并解密图片 this.fetchAndDecryptImage(entry.target); entry.target.src = require("@/assets/img/yes_bg.svg"); // 解密后取消观察 this.observer.unobserve(entry.target); } }); }); // this.$nextTick(() => { this.observer.observe(this.$refs.observe); }); }, updated() {}, mounted() {}, methods: { fetchAndDecryptImage(img) { // 获取图片的加密数据 urlToBuffer(img.src) .then((src) => { img.src = src; }) .catch((error) => { img.src = "@/assets/img/yes_bg.svg"; }); }, }, computed: {}, watch: {}, }; </script> <style scoped> </style>在这个代码基础上优化排队下载图片，只有上一个图片加载完再发起下一个图片请求

imgSrc: { require: true, type: String }, }, data() { return { observer: null, queue: [], // 存放需要加载的图片链接 }; }, components: {}, created() {}, updated() {}, mounted() { this.queue...

<template> </template> <script> // bmpgl.js export function BMPGL(ak) { return new Promise(function(resolve, reject) { window.init = function() { resolve(BMapGL) } const script = document.createElement('script') script.type = 'text/javascript' script.src = http://api.map.baidu.com/api?v=1.0&type=webgl&ak=${ak}&callback=init script.onerror = reject document.head.appendChild(script) }) } import { BMPGL } from "@/bmpgl.js" export default { name: "BaiDuMap", data() { return { ak: "UY607Rv3yQPpAXIFRHWHuyk2CV4Hqgj0", // 百度的地图密钥 myMap: null }; }, mounted() { this.initMap() }, methods: { initMap() { BMPGL(this.ak).then((BMapGL) => { let map = new BMapGL.Map("container"); let point = new BMapGL.Point(121.530027,38.867479) map.centerAndZoom(point, 19) var marker = new BMapGL.Marker(point); map.addOverlay(marker); map.enableScrollWheelZoom(true) var scaleCtrl = new BMapGL.ScaleControl(); map.addControl(scaleCtrl); var zoomCtrl = new BMapGL.ZoomControl(); map.addControl(zoomCtrl); }) .catch((err)=>{ console.log(err) }) }, } }; </script> <style> .allmap { width: 100%; height: 300px; position: relative; z-index: 1; } </style> 使用vue3 更改代码使其在一个.vue文件呈现

data() { return { ak: "UY607Rv3yQPpAXIFRHWHuyk2CV4Hqgj0", myMap: null }; }, mounted() { this.initMap(); }, methods: { initMap() { BMPGL(this.ak) .then((BMapGL) => { let map = new BMapGL....

<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Vue-upload-component Test</title> <script src="https://unpkg.com/vue"></script> <script src="https://unpkg.com/vue-upload-component"></script> </head> <body> {{file.name}} - Error: {{file.error}}, Success: {{file.success}} <file-upload ref="upload" v-model="files" post-action="/post.method" put-action="/put.method" @input-file="inputFile" @input-filter="inputFilter" > Upload file </file-upload> <button v-show="!$refs.upload || !$refs.upload.active" @click.prevent="$refs.upload.active = true" type="button">Start upload</button> <button v-show="$refs.upload && $refs.upload.active" @click.prevent="$refs.upload.active = false" type="button">Stop upload</button> <script> new Vue({ el: '#app', data: function () { return { files: [] } }, components: { FileUpload: VueUploadComponent }, methods: { /** * Has changed * @param Object|undefined newFile Read only * @param Object|undefined oldFile Read only * @return undefined */ inputFile: function (newFile, oldFile) { if (newFile && oldFile && !newFile.active && oldFile.active) { // Get response data console.log('response', newFile.response) if (newFile.xhr) { // Get the response status code console.log('status', newFile.xhr.status) } } }, /** * Pretreatment * @param Object|undefined newFile Read and write * @param Object|undefined oldFile Read only * @param Function prevent Prevent changing * @return undefined */ inputFilter: function (newFile, oldFile, prevent) { if (newFile && !oldFile) { // Filter non-image file if (!/\.(jpeg|jpe|jpg|gif|png|webp)$/i.test(newFile.name)) { return prevent() } } // Create a blob field newFile.blob = '' let URL = window.URL || window.webkitURL if (URL && URL.createObjectURL) { newFile.blob = URL.createObjectURL(newFile.file) } } } }); </script> </body> </html> 将这个页面改为 vue3 的写法

$refs.upload.active" @click.prevent="$refs.upload.active = true" type="button">Start upload <button v-show="$refs.upload && $refs.upload.active" @click.prevent="$refs.upload.active = false" type=...

<template> <a-table :pagination="false" :columns="columns" :dataSource="dataSource"> //循环展示数据或input输入框 <template v-for="col in ['abbreviation', 'fullName', 'nodes']" :slot="col" slot-scope="text, record, index" > <a-input v-if="editableData[record.key]" v-model="editableData[record.key][col]" /> <template v-else>{{ text }}</template> </template> //操作 <template slot="operation" slot-scope="text, record, index"> <a-icon type="check" @click="save(record.key)" /> <a-icon type="delete" @click="deleteItem(record.key)" /> <a-icon type="edit" @click="edit(record.key)" /> <a-icon type="plus" v-if="index==dataSource.length-1" @click="addItem(record.key)" /> </template> </a-table> </template> <script> import { cloneDeep } from "lodash"; export default { data() { return { editableData: [], //正在编辑的数组 columns: [ { title: "简称", dataIndex: "abbreviation", scopedSlots: { customRender: "abbreviation" } }, { title: "全称", dataIndex: "fullName", scopedSlots: { customRender: "fullName" } }, { title: "来源", dataIndex: "nodes", scopedSlots: { customRender: "nodes" } }, { title: "操作", dataIndex: "operation", scopedSlots: { customRender: "operation" } } ], //表格数据 dataSource: [ { key: 0, abbreviation: "简称1", fullName: "全称1", nodes: "来源1" }, { key: 1, abbreviation: "简称2", fullName: "全称2", nodes: "来源2" }, { key: 2, abbreviation: "简称3", fullName: "全称3", nodes: "来源3" }, { key: 3, abbreviation: "简称14", fullName: "全称14", nodes: "来源14" } ] }; }, components: {}, props: ["tableDatas"], watch: {}, updated() {}, created() {}, methods: { addItem(key) { let item = { key: key + 1, abbreviation: "", fullName: "", nodes: "" }; this.dataSource.splice(key + 1, 0, item); this.$set(this.editableData, key + 1, item); }, deleteItem(key) { this.dataSource = this.dataSource.filter(item => item.key !== key); }, edit(key) { let editItem = cloneDeep( this.dataSource.filter(item => key === item.key)[0] ); this.$set(this.editableData, key, editItem); }, save(key) { Object.assign( this.dataSource.filter(item => key === item.key)[0], this.editableData[key] ); this.$set(this.editableData, key, null); } } }; </script>怎么实现编辑全部

let editItem = cloneDeep(this.dataSource.filter(item => key === item.key)[0]); this.$set(this.editableData, key, editItem); }, save(key) { if (this.isEditingAll) { // 遍历所有行数据进行保存 ...

<template> 电子围栏视频监控实时定位环境检测 2 2 2 2 <Rail v-if="currentComponent === 'Rail'" />

for (let key in this.buttonStyle) { this.buttonStyle[key] = key === componentName; } }, }, }; .redText { color: red; } 这里使用了 v-bind:class 动态绑定样式类，当 buttonStyle 对象中...

编写一个Cube组件，入参为num，当num=3时，输出表格效果为： 1 1 1 2 2 2 3 3 3 当num=4时，输出表格效果为： 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 以此类推。要求：根据代码样例文件（index.vue和Cube.vue）进行修改在父组件（index.vue）实现输入框，输入或修改数字后自动刷新生成表格子组件（Cube.vue）中判断参数是否合法（数字且在[1,10]之间），如果不合法，通知父组件，父组件背景变为红色，合法则恢复原来颜色

输入框的值绑定到 num 变量上，每次输入时会触发 updateTable 方法，将 valid 变量重置为 true。Cube 组件接收 num 属性，根据 num 属性生成一个二维数组 table，其中每个元素都是一个数字。如果 num 不在 [1, 10] ...

编写一个Cube组件，入参为num，要求：根据代码样例文件（index.vue和Cube.vue）进行修改在父组件（index.vue）实现输入框，输入或修改数字后自动刷新生成表格子组件（Cube.vue）中判断参数是否合法（数字且在[1,10]之间），如果不合法，通知父组件，父组件背景变为红色，合法则恢复原来颜色当num=3时，输出表格效果为： 1 2 3 6 5 4 7 8 9 当num=4时，输出表格效果为： 1 2 3 4 8 7 6 5 9 10 11 12 16 15 14 13 第2，4，6...行反着输出

this.table = table; }, }, }; Cube.vue： html <div></div> export default { props: { num: { type: Number, required: true, validator: (value) => value >= 1 && value <= 10, }, }, ...

使用Echarts实现地图效果，并在地图上选择5个位需进行特效显示（波纹持效)用vue3，onMounted，mapData.js

this.renderChart(this.data); }, methods: { renderChart(data) { // 实例化ECharts图表，并配置地图 const chart = this.$echarts.init(this.$el); let mapConfig = { // 地图相关的配置，如地理区划编码...

vue3 父组件调用子组件的方法,等循环的第一个返回true在执行下一个

假设子组件的引用名为childRef，可以通过this.$refs.childRef来访问子组件的方法。为了实现循环中的条件判断，你可以使用v-for指令来遍历循环数据，并在每次迭代中检查条件。当条件满足时，可以调用子组件...

components: { ElementTable, VueBpmn }, methods: { openNewDialog() { this.dialogVisible = true; }, processSave(data) { let that = this; that.post(this.Apis.processBuffer, data, res => { if (res.code == 200) { that.$refs.elementTable.reload(); } }) }, deploy() { } }

相关推荐

解决vue2.0 element-ui中el-upload的before-upload方法返回false时submit()不生效问题

VUE 3D轮播图封装实现方法1.zip

Vue+Element-UI实现登录表单：集成随机验证码与验证功能

【In-Depth Analysis of the ARIMA Model】: Mastering Classical Methods for Time Series Forecasting

[Data Security and Backup]: Ultimate Strategies for Protecting Data with Python and MySQL

Dealing with Imbalanced Data: 7 Strategies to Overcome the Challenge

使用Echarts实现地图效果，并在地图上选择5个位需进行特效显示（波纹持效)用vue3，onMounted，mapData.js

vue3 父组件调用子组件的方法,等循环的第一个返回true在执行下一个

最新推荐

vue插件开发之使用pdf.js实现手机端在线预览pdf文档的方法

VUE 3D轮播图封装实现方法

Aspose资源包：转PDF无水印学习工具

管理建模和仿真的文件

【R语言高性能计算秘诀】：代码优化，提升分析效率的专家级方法

在构建视频会议系统时，如何通过H.323协议实现音视频流的高效传输，并确保通信的稳定性？

Go语言控制台输入输出操作教程

"互动学习：行动中的多样性与论文攻读经历"

【R语言机器学习新手起步】：caret包带你进入预测建模的世界

在选择PL2303和CP2102/CP2103 USB转串口芯片时，应如何考虑和比较它们的数据格式和波特率支持能力？